CN204030538U - A kind of water shutoff type cable intermediate joint - Google Patents
A kind of water shutoff type cable intermediate joint Download PDFInfo
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- CN204030538U CN204030538U CN201420367819.7U CN201420367819U CN204030538U CN 204030538 U CN204030538 U CN 204030538U CN 201420367819 U CN201420367819 U CN 201420367819U CN 204030538 U CN204030538 U CN 204030538U
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- internal layer
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- sealing device
- intermediate joint
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Abstract
The utility model discloses a kind of water shutoff type cable intermediate joint, comprise shielding internal layer, shielding internal layer has axial line hole; The junction that is positioned at two cables at shielding internal layer middle part has cavity, and the two ends that are positioned at cavity at shielding internal layer are provided with and the sealing device for outlet that shields internal layer inwall and contact, and sealing device for outlet has through hole.This structure has played effective anti-electric leakage effect, thereby has improved reliability and the security performance of cable intermediate joint, can effectively prevent the cable intermediate joint accident that moisture causes.
Description
Technical field
The utility model relates to cable intermediate joint.
Background technology
The application of cable intermediate joint in electric power system is more and more extensive.The transition joint of using on market is now all generally through type transition joint.This transition joint is in actual motion, after construction cabling, as rain enters core, when cable moves along with temperature raises, pressure increases, and rainwater, easily from transition joint inside to exosmosis, easily occurs creepage, leaky, cable intermediate joint is in service unreliable at power network line, dangerous.
Summary of the invention
The utility model provides a kind of water shutoff type cable intermediate joint, and this structure can effectively prevent the cable intermediate joint accident that moisture causes.
The technical scheme solving the problems of the technologies described above is: a kind of water shutoff type cable intermediate joint, comprise shielding internal layer, and shielding internal layer has axial line hole; The junction that is positioned at two cables at shielding internal layer middle part has cavity, and the two ends that are positioned at cavity at shielding internal layer are provided with and the sealing device for outlet that shields internal layer inwall and contact, and sealing device for outlet has through hole.
Said structure, owing to having there is cavity in shielding internal layer, and be provided with sealing device for outlet at cavity two ends, when being inserted into cable intermediate joint, realizes after electric connection by cable, as rainwater infiltrates the cavity of transition joint shielding internal layer by cable core, gathering that cavity is rainwater provides space, along with the rainwater in cavity is more and more, pressure in cavity also increases thereupon, now heave transition joint middle part, transition joint is subject to axial tensile force, and in opposite directions, the grip force of cable insulation and sealing device for outlet increases this tensile force direction thereupon.Simultaneously, pressure directly acts on sealing device for outlet, produce radially pressure, sealing device for outlet conductively-closed internal layer is kept out, therefore, sealing device for outlet can produce radial deformation, transition joint and cable grip force are increased with pressure, under Double-insurance structure, played effective anti-electric leakage effect, thereby improved reliability and the security performance of cable intermediate joint, can effectively prevent the cable intermediate joint accident that moisture causes.
Further, shielding internal layer and sealing device for outlet are Split type structure.
Further, shielding internal layer and sealing device for outlet are structure as a whole.
Further, shielding internal layer inwall is provided with inside location division near end, between location division and shielding internal layer end, forms containing cavity; Described sealing device for outlet comprises large end and small end, and large end is positioned at containing cavity, and small end holding is located in location division.This structure, fixing sealing device for outlet, and while thering is pressure in cavity, can not affect the distortion of transition joint and sealing device for outlet, can not affect sealing property.
Further, sealing device for outlet is cambered surface near the face at cavity middle part.This structure, while producing pressure in cavity, the pressure producing is more easily applied in cambered surface, and sealing device for outlet is more easily out of shape.
Further, at shielding internal layer inwall middle part, be provided with bulge loop, in cavity, be provided with the cable core tube connector contacting with bulge loop.Realized the equipotential of shielding internal layer and cable core tube connector.
Further, at shielding internal layer, be provided with insulating barrier outward, at insulating barrier, be provided with shield external layer outward, at the two ends of insulating barrier, be provided with stress solid.
Accompanying drawing explanation
Fig. 1 is the structural representation of embodiment 1 cable intermediate joint while not installing cable.
Fig. 2 is the cable intermediate joint structural representation that embodiment 1 is equiped with cable.
Fig. 3 is the structural representation of embodiment 2.
Fig. 4 is the enlarged drawing of A in Fig. 3.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is further elaborated.
Embodiment 1.
As depicted in figs. 1 and 2, water shutoff type cable intermediate joint comprises shielding internal layer 1, insulating barrier 2, shield external layer 3, stress solid 4, sealing device for outlet 5.Insulating barrier 2 be located at shielding internal layer 3 outside, and two ends be longer than shielding internal layer 1, at insulating barrier 2, there is line hole 21, insulating barrier 2 two ends are cone.Shield external layer 3 is located at outside insulating barrier 2, and stress solid 4 is connected in cone by cone match.
As shown in Figure 1, shielding internal layer 1 has axial line hole 11, the junction that is positioned at two cables at shielding internal layer 1 middle part has cavity 12, the two ends that are positioned at cavity 12 at shielding internal layer 1 are provided with and the sealing device for outlet 5 that shields internal layer inwall and contact, sealing device for outlet 5 has through hole 51, sealing device for outlet 5 is cambered surface near the face at cavity middle part, and shielding internal layer and sealing device for outlet are Split type structure, also can be structure as a whole.At shielding internal layer 1 inwall middle part, be provided with bulge loop 13.
As shown in Figure 2, in cavity 12, be provided with the cable core tube connector 6 contacting with bulge loop 13.By the end strip off of cable 10, cable, is realized and being electrically connected, the line hole 11 of shielding internal layer 1 is inserted in cable core tube connector 6 through the line hole 21 of stress solid 4, insulating barrier 2, and meanwhile, bulge loop 13 has been realized the equipotential of shielding internal layer and cable core tube connector.After cable 10 connects, as rainwater infiltrates the cavity 12 of transition joint shielding internal layer 1 by cable core, gathering that cavity 12 is rainwater provides space, along with the rainwater in cavity 12 is more and more, pressure in cavity 12 also increases thereupon, and now heave transition joint middle part, and transition joint is subject to axial tensile force, in opposite directions, insulating barrier 2 increases with the grip force of sealing device for outlet 5 this tensile force direction thereupon.Simultaneously, pressure directly acts on sealing device for outlet 5, produce radially pressure, because sealing device for outlet 5 conductively-closed internal layers are kept out, therefore, sealing device for outlet 5 can produce radial deformation, transition joint and cable grip force are increased with pressure, under Double-insurance structure, played effective anti-electric leakage effect, thereby improved reliability and the security performance of cable intermediate joint, can effectively prevent the cable intermediate joint accident that moisture causes.
Embodiment 2.
As shown in Figure 3, water shutoff type cable intermediate joint comprises shielding internal layer 1, insulating barrier 2, shield external layer 3, stress solid 4, sealing device for outlet 5.Insulating barrier 2 be located at shielding internal layer 3 outside, and two ends be longer than shielding internal layer 1, at insulating barrier 2, there is line hole, insulating barrier 2 two ends are cone.Shield external layer 3 is located at outside insulating barrier 2, and stress solid 4 is connected in cone by cone match.
As shown in Figure 3, shielding internal layer 1 has axial line hole, the junction that is positioned at two cables at shielding internal layer 1 middle part has cavity 12, the two ends that are positioned at cavity 12 at shielding internal layer 1 are provided with and the sealing device for outlet 5 that shields internal layer inwall and contact, sealing device for outlet 5 has through hole, shielding internal layer and sealing device for outlet are Split type structure, also can be structure as a whole.As shown in Figure 4, shielding internal layer 1 inwall is provided with inside location division 14 near end, between location division 14 and shielding internal layer end, forms containing cavity; Described sealing device for outlet 5 comprises large end and small end, and large end is positioned at containing cavity, and small end holding is located in location division.At shielding internal layer 1 inwall middle part, be provided with bulge loop 13.
As shown in Figure 3, in cavity 12, be provided with the cable core tube connector 6 contacting with bulge loop 13, by the end strip off of cable 10, cable through the line hole of stress solid 4, insulating barrier 2, the line hole of shielding internal layer 1 be inserted in copper pipe 6, realize and being electrically connected, meanwhile, bulge loop 13 has been realized the equipotential of shielding internal layer and cable core tube connector.After cable 10 connects, as rainwater infiltrates the cavity 12 of transition joint shielding internal layer 1 by cable core, gathering that cavity 12 is rainwater provides space, along with the rainwater in cavity 12 is more and more, pressure in cavity 12 also increases thereupon, and now heave transition joint middle part, and transition joint is subject to axial tensile force, in opposite directions, insulating barrier 2 increases with the grip force of sealing device for outlet 5 this tensile force direction thereupon.Simultaneously, pressure directly acts on sealing device for outlet 5, produce radially pressure, because sealing device for outlet 5 conductively-closed internal layers are kept out, therefore, sealing device for outlet 5 can produce radial deformation, transition joint and cable grip force are increased with pressure, under Double-insurance structure, played effective anti-electric leakage effect, thereby improved reliability and the security performance of cable intermediate joint.Meanwhile, sealing device for outlet 5 and the fit structure that shields internal layer 1, fixedly sealing device for outlet 5, and while thering is pressure in cavity 12, can not affect the distortion of transition joint and sealing device for outlet, can not affect sealing property, can effectively prevent the cable intermediate joint accident that moisture causes.
Claims (7)
1. a water shutoff type cable intermediate joint, comprises shielding internal layer, and shielding internal layer has axial line hole; It is characterized in that: the junction that is positioned at two cables at shielding internal layer middle part has cavity, the two ends that are positioned at cavity at shielding internal layer are provided with and the sealing device for outlet that shields internal layer inwall and contact, and sealing device for outlet has through hole.
2. water shutoff type cable intermediate joint according to claim 1, is characterized in that: shielding internal layer and sealing device for outlet are Split type structure.
3. water shutoff type cable intermediate joint according to claim 1, is characterized in that: shielding internal layer and sealing device for outlet are structure as a whole.
4. water shutoff type cable intermediate joint according to claim 1, is characterized in that: shielding internal layer inwall is provided with inside location division near end, between location division and shielding internal layer end, forms containing cavity; Described sealing device for outlet comprises large end and small end, and large end is positioned at containing cavity, and small end holding is located in location division.
5. according to the water shutoff type cable intermediate joint described in claim 1 or 4, it is characterized in that: sealing device for outlet is cambered surface near the face at cavity middle part.
6. water shutoff type cable intermediate joint according to claim 1, is characterized in that: at shielding internal layer inwall middle part, be provided with bulge loop, be provided with the cable core tube connector contacting with bulge loop in cavity.
7. water shutoff type cable intermediate joint according to claim 1, is characterized in that: at shielding internal layer, be provided with insulating barrier outward, at insulating barrier, be provided with shield external layer outward, at the two ends of insulating barrier, be provided with stress solid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420367819.7U CN204030538U (en) | 2014-07-04 | 2014-07-04 | A kind of water shutoff type cable intermediate joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420367819.7U CN204030538U (en) | 2014-07-04 | 2014-07-04 | A kind of water shutoff type cable intermediate joint |
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| Publication Number | Publication Date |
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| CN204030538U true CN204030538U (en) | 2014-12-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420367819.7U Active CN204030538U (en) | 2014-07-04 | 2014-07-04 | A kind of water shutoff type cable intermediate joint |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104600656A (en) * | 2014-12-29 | 2015-05-06 | 中海石油（中国）有限公司天津分公司 | Watertight connecting device for underground cable connector |
| CN107994359A (en) * | 2017-12-22 | 2018-05-04 | 深圳市沃尔核材股份有限公司 | The adapter assembly and connector connecting method of built-in fiber cable |
| CN110364987A (en) * | 2019-08-15 | 2019-10-22 | 江苏中天科技电缆附件有限公司 | A kind of transition joint of low thickness insulating layer cable |
-
2014
- 2014-07-04 CN CN201420367819.7U patent/CN204030538U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104600656A (en) * | 2014-12-29 | 2015-05-06 | 中海石油（中国）有限公司天津分公司 | Watertight connecting device for underground cable connector |
| CN104600656B (en) * | 2014-12-29 | 2017-12-15 | 中海石油（中国）有限公司天津分公司 | A kind of submerged cable joint water sealed connector |
| CN107994359A (en) * | 2017-12-22 | 2018-05-04 | 深圳市沃尔核材股份有限公司 | The adapter assembly and connector connecting method of built-in fiber cable |
| CN107994359B (en) * | 2017-12-22 | 2024-02-02 | 深圳市沃尔核材股份有限公司 | Joint assembly of built-in optical fiber cable and joint connection method |
| CN110364987A (en) * | 2019-08-15 | 2019-10-22 | 江苏中天科技电缆附件有限公司 | A kind of transition joint of low thickness insulating layer cable |
| CN110364987B (en) * | 2019-08-15 | 2024-03-08 | 江苏中天科技电缆附件有限公司 | Intermediate joint of low-thickness insulating layer cable |
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